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Hi, I work in merchant navy as engineer. We have sextant onboard. We have gyro compass and magnetic compass onboard too. It is duty of...

CVN has has 65,000 hp per screw. War ship always have lot more hours power . The cargo ships are built for fuel economy. I do not know...

I was to see supper size with screw. I am say all but I seen just one Dave

I agree 99% never use Calculus after college I use Math up to Calculus a lot when working doing engineering. But I think in reality...

I wish I knew Would satellite get virus? If ship navigation equipment got virus some one could a cellphone. I know one the Navy had...

Simple way of finding Longitude Use sun dial to find the time where at only by sun Use global with time disk on the top set to disk...

Just think of sailing in 1492 use a Astrolabe Latitude only. With dead reckoning using a rope and hourglas/sandglass. Longitude was in...

More likely enemy jamming the system. Russia and Ukraine both play this "game".

I wonder if someone at the top is concerned about a virus impacting our satnav system in time of war…

I agree The big thing was teaching high school was how to use chart and tables for wood construction. At time when High school and...

They teach it for the same reason that engineers have to learn differential calculus. To teach that person how to learn. I can't think...

The biggest between the Sextant and transit is the Sextant uses the ocean for leavel and transit need on stable ground. The sextant...

I whish that was in article on if everything broke down. It is like some maybe super cargo ships having a engine and prop. What can go...

( I could never hold steady enough for stars ) I think problem with most of us will have. They Navy most hàve some reson for teaching...

This off subject of engines. Asking about Navy is teaching Celestial Navigation to new officers. The Navy start this about 10 year ago...